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Finding the Fourth Proportional to 1,151.17, 1,588.77 and 702.95

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Solution

The fourth proportional to 1,151.17, 1,588.77 and 702.95 is: 970.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,151.17 : 1,588.77 = 702.95 : x
  2. Step 2: Convert to fraction form
    1,151.17/1,588.77 = 702.95/x
  3. Step 3: Cross multiply
    1,151.17x = 1,588.77 × 702.95
  4. Step 4: Simplify right side
    1,151.17x = 1,116,819.59
  5. Step 5: Solve for x
    x = 1,116,819.59/1,151.17
  6. Step 6: Final answer
    x = 970.16

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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.