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Finding the Fourth Proportional to 583.62, 874.28 and 339.63

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Solution

The fourth proportional to 583.62, 874.28 and 339.63 is: 508.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.62 : 874.28 = 339.63 : x
  2. Step 2: Convert to fraction form
    583.62/874.28 = 339.63/x
  3. Step 3: Cross multiply
    583.62x = 874.28 × 339.63
  4. Step 4: Simplify right side
    583.62x = 296,931.72
  5. Step 5: Solve for x
    x = 296,931.72/583.62
  6. Step 6: Final answer
    x = 508.78

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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.