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Finding the Fourth Proportional to 614.99, 848.51 and 378.71

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Solution

The fourth proportional to 614.99, 848.51 and 378.71 is: 522.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.99 : 848.51 = 378.71 : x
  2. Step 2: Convert to fraction form
    614.99/848.51 = 378.71/x
  3. Step 3: Cross multiply
    614.99x = 848.51 × 378.71
  4. Step 4: Simplify right side
    614.99x = 321,337.69
  5. Step 5: Solve for x
    x = 321,337.69/614.99
  6. Step 6: Final answer
    x = 522.51

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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.