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Finding the Fourth Proportional to 870.03, 1,304.24 and 292.77

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Solution

The fourth proportional to 870.03, 1,304.24 and 292.77 is: 438.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    870.03 : 1,304.24 = 292.77 : x
  2. Step 2: Convert to fraction form
    870.03/1,304.24 = 292.77/x
  3. Step 3: Cross multiply
    870.03x = 1,304.24 × 292.77
  4. Step 4: Simplify right side
    870.03x = 381,840.88
  5. Step 5: Solve for x
    x = 381,840.88/870.03
  6. Step 6: Final answer
    x = 438.88

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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.