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Finding the Fourth Proportional to 837.01, 1,155.21 and 567.71

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Solution

The fourth proportional to 837.01, 1,155.21 and 567.71 is: 783.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.01 : 1,155.21 = 567.71 : x
  2. Step 2: Convert to fraction form
    837.01/1,155.21 = 567.71/x
  3. Step 3: Cross multiply
    837.01x = 1,155.21 × 567.71
  4. Step 4: Simplify right side
    837.01x = 655,818.49
  5. Step 5: Solve for x
    x = 655,818.49/837.01
  6. Step 6: Final answer
    x = 783.53

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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.