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Finding the Fourth Proportional to 953.92, 1,316.10 and 539.92

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Solution

The fourth proportional to 953.92, 1,316.10 and 539.92 is: 744.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.92 : 1,316.10 = 539.92 : x
  2. Step 2: Convert to fraction form
    953.92/1,316.10 = 539.92/x
  3. Step 3: Cross multiply
    953.92x = 1,316.10 × 539.92
  4. Step 4: Simplify right side
    953.92x = 710,588.71
  5. Step 5: Solve for x
    x = 710,588.71/953.92
  6. Step 6: Final answer
    x = 744.91

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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.