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Finding the Fourth Proportional to 1,150.48, 1,587.75 and 653.18

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Solution

The fourth proportional to 1,150.48, 1,587.75 and 653.18 is: 901.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,150.48 : 1,587.75 = 653.18 : x
  2. Step 2: Convert to fraction form
    1,150.48/1,587.75 = 653.18/x
  3. Step 3: Cross multiply
    1,150.48x = 1,587.75 × 653.18
  4. Step 4: Simplify right side
    1,150.48x = 1,037,078.61
  5. Step 5: Solve for x
    x = 1,037,078.61/1,150.48
  6. Step 6: Final answer
    x = 901.43

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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.