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Finding the Fourth Proportional to 565.14, 848.01 and 428.15

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Solution

The fourth proportional to 565.14, 848.01 and 428.15 is: 642.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.14 : 848.01 = 428.15 : x
  2. Step 2: Convert to fraction form
    565.14/848.01 = 428.15/x
  3. Step 3: Cross multiply
    565.14x = 848.01 × 428.15
  4. Step 4: Simplify right side
    565.14x = 363,071.24
  5. Step 5: Solve for x
    x = 363,071.24/565.14
  6. Step 6: Final answer
    x = 642.44

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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.