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Finding the Fourth Proportional to 614.76, 848.36 and 338.76

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Solution

The fourth proportional to 614.76, 848.36 and 338.76 is: 467.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.76 : 848.36 = 338.76 : x
  2. Step 2: Convert to fraction form
    614.76/848.36 = 338.76/x
  3. Step 3: Cross multiply
    614.76x = 848.36 × 338.76
  4. Step 4: Simplify right side
    614.76x = 287,390.43
  5. Step 5: Solve for x
    x = 287,390.43/614.76
  6. Step 6: Final answer
    x = 467.48

Related Problems

Find fourth proportional to 307.38, 424.18 and 169.38
Half scale
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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.