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Finding the Fourth Proportional to 652.74, 898.74 and 554.28

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Solution

The fourth proportional to 652.74, 898.74 and 554.28 is: 763.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.74 : 898.74 = 554.28 : x
  2. Step 2: Convert to fraction form
    652.74/898.74 = 554.28/x
  3. Step 3: Cross multiply
    652.74x = 898.74 × 554.28
  4. Step 4: Simplify right side
    652.74x = 498,153.61
  5. Step 5: Solve for x
    x = 498,153.61/652.74
  6. Step 6: Final answer
    x = 763.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.