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Finding the Fourth Proportional to 1,150.38, 1,587.43 and 653.10

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Solution

The fourth proportional to 1,150.38, 1,587.43 and 653.10 is: 901.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,150.38 : 1,587.43 = 653.10 : x
  2. Step 2: Convert to fraction form
    1,150.38/1,587.43 = 653.10/x
  3. Step 3: Cross multiply
    1,150.38x = 1,587.43 × 653.10
  4. Step 4: Simplify right side
    1,150.38x = 1,036,750.53
  5. Step 5: Solve for x
    x = 1,036,750.53/1,150.38
  6. Step 6: Final answer
    x = 901.22

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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.