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Finding the Fourth Proportional to 1,259.41, 1,888.86 and 437.72

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Solution

The fourth proportional to 1,259.41, 1,888.86 and 437.72 is: 656.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259.41 : 1,888.86 = 437.72 : x
  2. Step 2: Convert to fraction form
    1,259.41/1,888.86 = 437.72/x
  3. Step 3: Cross multiply
    1,259.41x = 1,888.86 × 437.72
  4. Step 4: Simplify right side
    1,259.41x = 826,780.17
  5. Step 5: Solve for x
    x = 826,780.17/1,259.41
  6. Step 6: Final answer
    x = 656.48

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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.