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Finding the Fourth Proportional to 416.34, 619.59 and 402.49

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Solution

The fourth proportional to 416.34, 619.59 and 402.49 is: 598.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.34 : 619.59 = 402.49 : x
  2. Step 2: Convert to fraction form
    416.34/619.59 = 402.49/x
  3. Step 3: Cross multiply
    416.34x = 619.59 × 402.49
  4. Step 4: Simplify right side
    416.34x = 249,381.67
  5. Step 5: Solve for x
    x = 249,381.67/416.34
  6. Step 6: Final answer
    x = 598.99

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.