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Finding the Fourth Proportional to 560.84, 840.14 and 445.48

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Solution

The fourth proportional to 560.84, 840.14 and 445.48 is: 667.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.84 : 840.14 = 445.48 : x
  2. Step 2: Convert to fraction form
    560.84/840.14 = 445.48/x
  3. Step 3: Cross multiply
    560.84x = 840.14 × 445.48
  4. Step 4: Simplify right side
    560.84x = 374,262.91
  5. Step 5: Solve for x
    x = 374,262.91/560.84
  6. Step 6: Final answer
    x = 667.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.