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Finding the Fourth Proportional to 781.98, 1,173 and 295.02

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Solution

The fourth proportional to 781.98, 1,173 and 295.02 is: 442.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    781.98 : 1,173 = 295.02 : x
  2. Step 2: Convert to fraction form
    781.98/1,173 = 295.02/x
  3. Step 3: Cross multiply
    781.98x = 1,173 × 295.02
  4. Step 4: Simplify right side
    781.98x = 346,058.46
  5. Step 5: Solve for x
    x = 346,058.46/781.98
  6. Step 6: Final answer
    x = 442.54

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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.