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Finding the Fourth Proportional to 489.61, 730.97 and 373.42

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Solution

The fourth proportional to 489.61, 730.97 and 373.42 is: 557.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.61 : 730.97 = 373.42 : x
  2. Step 2: Convert to fraction form
    489.61/730.97 = 373.42/x
  3. Step 3: Cross multiply
    489.61x = 730.97 × 373.42
  4. Step 4: Simplify right side
    489.61x = 272,957.92
  5. Step 5: Solve for x
    x = 272,957.92/489.61
  6. Step 6: Final answer
    x = 557.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.