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Finding the Fourth Proportional to 1,562.61, 2,342.70 and 832.40

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Solution

The fourth proportional to 1,562.61, 2,342.70 and 832.40 is: 1,247.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,562.61 : 2,342.70 = 832.40 : x
  2. Step 2: Convert to fraction form
    1,562.61/2,342.70 = 832.40/x
  3. Step 3: Cross multiply
    1,562.61x = 2,342.70 × 832.40
  4. Step 4: Simplify right side
    1,562.61x = 1,950,051.77
  5. Step 5: Solve for x
    x = 1,950,051.77/1,562.61
  6. Step 6: Final answer
    x = 1,247.95

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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.