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Finding the Fourth Proportional to 837.02, 1,155.06 and 542.30

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Solution

The fourth proportional to 837.02, 1,155.06 and 542.30 is: 748.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.02 : 1,155.06 = 542.30 : x
  2. Step 2: Convert to fraction form
    837.02/1,155.06 = 542.30/x
  3. Step 3: Cross multiply
    837.02x = 1,155.06 × 542.30
  4. Step 4: Simplify right side
    837.02x = 626,389.04
  5. Step 5: Solve for x
    x = 626,389.04/837.02
  6. Step 6: Final answer
    x = 748.36

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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.