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Finding the Fourth Proportional to 1,437.55, 2,156.73 and 572.47

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Solution

The fourth proportional to 1,437.55, 2,156.73 and 572.47 is: 858.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,437.55 : 2,156.73 = 572.47 : x
  2. Step 2: Convert to fraction form
    1,437.55/2,156.73 = 572.47/x
  3. Step 3: Cross multiply
    1,437.55x = 2,156.73 × 572.47
  4. Step 4: Simplify right side
    1,437.55x = 1,234,655.68
  5. Step 5: Solve for x
    x = 1,234,655.68/1,437.55
  6. Step 6: Final answer
    x = 858.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.