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Finding the Fourth Proportional to 862.24, 1,187.25 and 675.52

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Solution

The fourth proportional to 862.24, 1,187.25 and 675.52 is: 930.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    862.24 : 1,187.25 = 675.52 : x
  2. Step 2: Convert to fraction form
    862.24/1,187.25 = 675.52/x
  3. Step 3: Cross multiply
    862.24x = 1,187.25 × 675.52
  4. Step 4: Simplify right side
    862.24x = 802,011.12
  5. Step 5: Solve for x
    x = 802,011.12/862.24
  6. Step 6: Final answer
    x = 930.15

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1.5x scale

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.