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Finding the Fourth Proportional to 710.87, 1,065.29 and 363.72

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Solution

The fourth proportional to 710.87, 1,065.29 and 363.72 is: 545.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.87 : 1,065.29 = 363.72 : x
  2. Step 2: Convert to fraction form
    710.87/1,065.29 = 363.72/x
  3. Step 3: Cross multiply
    710.87x = 1,065.29 × 363.72
  4. Step 4: Simplify right side
    710.87x = 387,465.46
  5. Step 5: Solve for x
    x = 387,465.46/710.87
  6. Step 6: Final answer
    x = 545.06

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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.