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Finding the Fourth Proportional to 592.47, 888.69 and 428.10

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Solution

The fourth proportional to 592.47, 888.69 and 428.10 is: 642.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    592.47 : 888.69 = 428.10 : x
  2. Step 2: Convert to fraction form
    592.47/888.69 = 428.10/x
  3. Step 3: Cross multiply
    592.47x = 888.69 × 428.10
  4. Step 4: Simplify right side
    592.47x = 380,448.19
  5. Step 5: Solve for x
    x = 380,448.19/592.47
  6. Step 6: Final answer
    x = 642.14

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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.