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Finding the Fourth Proportional to 459.74, 634.54 and 284.98

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Solution

The fourth proportional to 459.74, 634.54 and 284.98 is: 393.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.74 : 634.54 = 284.98 : x
  2. Step 2: Convert to fraction form
    459.74/634.54 = 284.98/x
  3. Step 3: Cross multiply
    459.74x = 634.54 × 284.98
  4. Step 4: Simplify right side
    459.74x = 180,831.21
  5. Step 5: Solve for x
    x = 180,831.21/459.74
  6. Step 6: Final answer
    x = 393.33

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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.