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Finding the Fourth Proportional to 614.76, 848.16 and 418.20

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Solution

The fourth proportional to 614.76, 848.16 and 418.20 is: 576.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.76 : 848.16 = 418.20 : x
  2. Step 2: Convert to fraction form
    614.76/848.16 = 418.20/x
  3. Step 3: Cross multiply
    614.76x = 848.16 × 418.20
  4. Step 4: Simplify right side
    614.76x = 354,700.51
  5. Step 5: Solve for x
    x = 354,700.51/614.76
  6. Step 6: Final answer
    x = 576.97

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Find fourth proportional to 307.38, 424.08 and 209.10
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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.