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Finding the Fourth Proportional to 489.48, 738.55 and 473.32

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Solution

The fourth proportional to 489.48, 738.55 and 473.32 is: 714.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.48 : 738.55 = 473.32 : x
  2. Step 2: Convert to fraction form
    489.48/738.55 = 473.32/x
  3. Step 3: Cross multiply
    489.48x = 738.55 × 473.32
  4. Step 4: Simplify right side
    489.48x = 349,570.49
  5. Step 5: Solve for x
    x = 349,570.49/489.48
  6. Step 6: Final answer
    x = 714.17

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.