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Finding the Fourth Proportional to 554.76, 765.66 and 358.85

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Solution

The fourth proportional to 554.76, 765.66 and 358.85 is: 495.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.76 : 765.66 = 358.85 : x
  2. Step 2: Convert to fraction form
    554.76/765.66 = 358.85/x
  3. Step 3: Cross multiply
    554.76x = 765.66 × 358.85
  4. Step 4: Simplify right side
    554.76x = 274,753.26
  5. Step 5: Solve for x
    x = 274,753.26/554.76
  6. Step 6: Final answer
    x = 495.27

Related Problems

Find fourth proportional to 277.38, 382.83 and 179.42
Half scale
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Double scale
Find fourth proportional to 555.76, 767.04 and 359.85
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.