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Finding the Fourth Proportional to 1,150.64, 1,587.92 and 653.36

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Solution

The fourth proportional to 1,150.64, 1,587.92 and 653.36 is: 901.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,150.64 : 1,587.92 = 653.36 : x
  2. Step 2: Convert to fraction form
    1,150.64/1,587.92 = 653.36/x
  3. Step 3: Cross multiply
    1,150.64x = 1,587.92 × 653.36
  4. Step 4: Simplify right side
    1,150.64x = 1,037,483.41
  5. Step 5: Solve for x
    x = 1,037,483.41/1,150.64
  6. Step 6: Final answer
    x = 901.66

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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.