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Finding the Fourth Proportional to 560.76, 840.60 and 444.90

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Solution

The fourth proportional to 560.76, 840.60 and 444.90 is: 666.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.76 : 840.60 = 444.90 : x
  2. Step 2: Convert to fraction form
    560.76/840.60 = 444.90/x
  3. Step 3: Cross multiply
    560.76x = 840.60 × 444.90
  4. Step 4: Simplify right side
    560.76x = 373,982.94
  5. Step 5: Solve for x
    x = 373,982.94/560.76
  6. Step 6: Final answer
    x = 666.92

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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.