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Finding the Fourth Proportional to 614.71, 922.47 and 612.28

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Solution

The fourth proportional to 614.71, 922.47 and 612.28 is: 918.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.71 : 922.47 = 612.28 : x
  2. Step 2: Convert to fraction form
    614.71/922.47 = 612.28/x
  3. Step 3: Cross multiply
    614.71x = 922.47 × 612.28
  4. Step 4: Simplify right side
    614.71x = 564,809.93
  5. Step 5: Solve for x
    x = 564,809.93/614.71
  6. Step 6: Final answer
    x = 918.82

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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.