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Finding the Fourth Proportional to 1,013.70, 1,398.91 and 547.95

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Solution

The fourth proportional to 1,013.70, 1,398.91 and 547.95 is: 756.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,013.70 : 1,398.91 = 547.95 : x
  2. Step 2: Convert to fraction form
    1,013.70/1,398.91 = 547.95/x
  3. Step 3: Cross multiply
    1,013.70x = 1,398.91 × 547.95
  4. Step 4: Simplify right side
    1,013.70x = 766,532.73
  5. Step 5: Solve for x
    x = 766,532.73/1,013.70
  6. Step 6: Final answer
    x = 756.17

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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.