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Finding the Fourth Proportional to 1,258.52, 1,887.76 and 346.52

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Solution

The fourth proportional to 1,258.52, 1,887.76 and 346.52 is: 519.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258.52 : 1,887.76 = 346.52 : x
  2. Step 2: Convert to fraction form
    1,258.52/1,887.76 = 346.52/x
  3. Step 3: Cross multiply
    1,258.52x = 1,887.76 × 346.52
  4. Step 4: Simplify right side
    1,258.52x = 654,146.60
  5. Step 5: Solve for x
    x = 654,146.60/1,258.52
  6. Step 6: Final answer
    x = 519.77

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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.