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Finding the Fourth Proportional to 592.78, 888.80 and 430.60

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Solution

The fourth proportional to 592.78, 888.80 and 430.60 is: 645.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    592.78 : 888.80 = 430.60 : x
  2. Step 2: Convert to fraction form
    592.78/888.80 = 430.60/x
  3. Step 3: Cross multiply
    592.78x = 888.80 × 430.60
  4. Step 4: Simplify right side
    592.78x = 382,717.28
  5. Step 5: Solve for x
    x = 382,717.28/592.78
  6. Step 6: Final answer
    x = 645.63

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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.