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Finding the Fourth Proportional to 554.78, 769.50 and 535.08

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Solution

The fourth proportional to 554.78, 769.50 and 535.08 is: 742.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.78 : 769.50 = 535.08 : x
  2. Step 2: Convert to fraction form
    554.78/769.50 = 535.08/x
  3. Step 3: Cross multiply
    554.78x = 769.50 × 535.08
  4. Step 4: Simplify right side
    554.78x = 411,744.06
  5. Step 5: Solve for x
    x = 411,744.06/554.78
  6. Step 6: Final answer
    x = 742.18

Related Problems

Find fourth proportional to 277.39, 384.75 and 267.54
Half scale
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Double scale
Find fourth proportional to 555.78, 770.89 and 536.08
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.