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Finding the Fourth Proportional to 1,254.82, 1,881.60 and 474.79

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Solution

The fourth proportional to 1,254.82, 1,881.60 and 474.79 is: 711.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254.82 : 1,881.60 = 474.79 : x
  2. Step 2: Convert to fraction form
    1,254.82/1,881.60 = 474.79/x
  3. Step 3: Cross multiply
    1,254.82x = 1,881.60 × 474.79
  4. Step 4: Simplify right side
    1,254.82x = 893,364.86
  5. Step 5: Solve for x
    x = 893,364.86/1,254.82
  6. Step 6: Final answer
    x = 711.95

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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.