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Finding the Fourth Proportional to 425.01, 586.44 and 307.20

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Solution

The fourth proportional to 425.01, 586.44 and 307.20 is: 423.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.01 : 586.44 = 307.20 : x
  2. Step 2: Convert to fraction form
    425.01/586.44 = 307.20/x
  3. Step 3: Cross multiply
    425.01x = 586.44 × 307.20
  4. Step 4: Simplify right side
    425.01x = 180,154.37
  5. Step 5: Solve for x
    x = 180,154.37/425.01
  6. Step 6: Final answer
    x = 423.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.