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Finding the Fourth Proportional to 1,062.13, 1,466.61 and 689.74

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Solution

The fourth proportional to 1,062.13, 1,466.61 and 689.74 is: 952.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,062.13 : 1,466.61 = 689.74 : x
  2. Step 2: Convert to fraction form
    1,062.13/1,466.61 = 689.74/x
  3. Step 3: Cross multiply
    1,062.13x = 1,466.61 × 689.74
  4. Step 4: Simplify right side
    1,062.13x = 1,011,579.58
  5. Step 5: Solve for x
    x = 1,011,579.58/1,062.13
  6. Step 6: Final answer
    x = 952.41

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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.