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Finding the Fourth Proportional to 592.79, 887.66 and 386.74

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Solution

The fourth proportional to 592.79, 887.66 and 386.74 is: 579.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    592.79 : 887.66 = 386.74 : x
  2. Step 2: Convert to fraction form
    592.79/887.66 = 386.74/x
  3. Step 3: Cross multiply
    592.79x = 887.66 × 386.74
  4. Step 4: Simplify right side
    592.79x = 343,294.25
  5. Step 5: Solve for x
    x = 343,294.25/592.79
  6. Step 6: Final answer
    x = 579.12

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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.