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Finding the Fourth Proportional to 495.19, 681.54 and 424.45

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Solution

The fourth proportional to 495.19, 681.54 and 424.45 is: 584.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.19 : 681.54 = 424.45 : x
  2. Step 2: Convert to fraction form
    495.19/681.54 = 424.45/x
  3. Step 3: Cross multiply
    495.19x = 681.54 × 424.45
  4. Step 4: Simplify right side
    495.19x = 289,277.53
  5. Step 5: Solve for x
    x = 289,277.53/495.19
  6. Step 6: Final answer
    x = 584.18

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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.