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Finding the Fourth Proportional to 424.76, 586.15 and 235.69

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Solution

The fourth proportional to 424.76, 586.15 and 235.69 is: 325.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.76 : 586.15 = 235.69 : x
  2. Step 2: Convert to fraction form
    424.76/586.15 = 235.69/x
  3. Step 3: Cross multiply
    424.76x = 586.15 × 235.69
  4. Step 4: Simplify right side
    424.76x = 138,150.94
  5. Step 5: Solve for x
    x = 138,150.94/424.76
  6. Step 6: Final answer
    x = 325.25

Related Problems

Find fourth proportional to 212.38, 293.07 and 117.85
Half scale
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Double scale
Find fourth proportional to 425.76, 587.53 and 236.69
Similar ratio
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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.