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Finding the Fourth Proportional to 981.51, 1,472.17 and 332.17

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Solution

The fourth proportional to 981.51, 1,472.17 and 332.17 is: 498.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    981.51 : 1,472.17 = 332.17 : x
  2. Step 2: Convert to fraction form
    981.51/1,472.17 = 332.17/x
  3. Step 3: Cross multiply
    981.51x = 1,472.17 × 332.17
  4. Step 4: Simplify right side
    981.51x = 489,002.52
  5. Step 5: Solve for x
    x = 489,002.52/981.51
  6. Step 6: Final answer
    x = 498.22

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