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Finding the Fourth Proportional to 444.48, 614.16 and 319.92

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Solution

The fourth proportional to 444.48, 614.16 and 319.92 is: 442.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.48 : 614.16 = 319.92 : x
  2. Step 2: Convert to fraction form
    444.48/614.16 = 319.92/x
  3. Step 3: Cross multiply
    444.48x = 614.16 × 319.92
  4. Step 4: Simplify right side
    444.48x = 196,482.07
  5. Step 5: Solve for x
    x = 196,482.07/444.48
  6. Step 6: Final answer
    x = 442.05

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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.