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Finding the Fourth Proportional to 1,234.61, 1,851.21 and 585.35

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Solution

The fourth proportional to 1,234.61, 1,851.21 and 585.35 is: 877.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,234.61 : 1,851.21 = 585.35 : x
  2. Step 2: Convert to fraction form
    1,234.61/1,851.21 = 585.35/x
  3. Step 3: Cross multiply
    1,234.61x = 1,851.21 × 585.35
  4. Step 4: Simplify right side
    1,234.61x = 1,083,605.77
  5. Step 5: Solve for x
    x = 1,083,605.77/1,234.61
  6. Step 6: Final answer
    x = 877.69

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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.