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Finding the Fourth Proportional to 557.49, 835.20 and 435.17

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Solution

The fourth proportional to 557.49, 835.20 and 435.17 is: 651.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.49 : 835.20 = 435.17 : x
  2. Step 2: Convert to fraction form
    557.49/835.20 = 435.17/x
  3. Step 3: Cross multiply
    557.49x = 835.20 × 435.17
  4. Step 4: Simplify right side
    557.49x = 363,449.81
  5. Step 5: Solve for x
    x = 363,449.81/557.49
  6. Step 6: Final answer
    x = 651.94

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.