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Finding the Fourth Proportional to 1,150.09, 1,587.12 and 652.68

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Solution

The fourth proportional to 1,150.09, 1,587.12 and 652.68 is: 900.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,150.09 : 1,587.12 = 652.68 : x
  2. Step 2: Convert to fraction form
    1,150.09/1,587.12 = 652.68/x
  3. Step 3: Cross multiply
    1,150.09x = 1,587.12 × 652.68
  4. Step 4: Simplify right side
    1,150.09x = 1,035,881.48
  5. Step 5: Solve for x
    x = 1,035,881.48/1,150.09
  6. Step 6: Final answer
    x = 900.70

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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.