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Finding the Fourth Proportional to 554.72, 764.74 and 436.22

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Solution

The fourth proportional to 554.72, 764.74 and 436.22 is: 601.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.72 : 764.74 = 436.22 : x
  2. Step 2: Convert to fraction form
    554.72/764.74 = 436.22/x
  3. Step 3: Cross multiply
    554.72x = 764.74 × 436.22
  4. Step 4: Simplify right side
    554.72x = 333,594.47
  5. Step 5: Solve for x
    x = 333,594.47/554.72
  6. Step 6: Final answer
    x = 601.38

Related Problems

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Half scale
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Double scale
Find fourth proportional to 555.72, 766.12 and 437.22
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.