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Finding the Fourth Proportional to 425.19, 586.75 and 238.68

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Solution

The fourth proportional to 425.19, 586.75 and 238.68 is: 329.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.19 : 586.75 = 238.68 : x
  2. Step 2: Convert to fraction form
    425.19/586.75 = 238.68/x
  3. Step 3: Cross multiply
    425.19x = 586.75 × 238.68
  4. Step 4: Simplify right side
    425.19x = 140,044.89
  5. Step 5: Solve for x
    x = 140,044.89/425.19
  6. Step 6: Final answer
    x = 329.37

Related Problems

Find fourth proportional to 212.60, 293.37 and 119.34
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Double scale
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Similar ratio
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1.5x scale

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.