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Finding the Fourth Proportional to 560.92, 774.06 and 312.26

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Solution

The fourth proportional to 560.92, 774.06 and 312.26 is: 430.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.92 : 774.06 = 312.26 : x
  2. Step 2: Convert to fraction form
    560.92/774.06 = 312.26/x
  3. Step 3: Cross multiply
    560.92x = 774.06 × 312.26
  4. Step 4: Simplify right side
    560.92x = 241,705.26
  5. Step 5: Solve for x
    x = 241,705.26/560.92
  6. Step 6: Final answer
    x = 430.91

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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.