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Finding the Fourth Proportional to 560.65, 840.48 and 300.79

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Solution

The fourth proportional to 560.65, 840.48 and 300.79 is: 450.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.65 : 840.48 = 300.79 : x
  2. Step 2: Convert to fraction form
    560.65/840.48 = 300.79/x
  3. Step 3: Cross multiply
    560.65x = 840.48 × 300.79
  4. Step 4: Simplify right side
    560.65x = 252,805.54
  5. Step 5: Solve for x
    x = 252,805.54/560.65
  6. Step 6: Final answer
    x = 450.92

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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.