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Finding the Fourth Proportional to 560.50, 840.78 and 175.78

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Solution

The fourth proportional to 560.50, 840.78 and 175.78 is: 263.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.50 : 840.78 = 175.78 : x
  2. Step 2: Convert to fraction form
    560.50/840.78 = 175.78/x
  3. Step 3: Cross multiply
    560.50x = 840.78 × 175.78
  4. Step 4: Simplify right side
    560.50x = 147,792.31
  5. Step 5: Solve for x
    x = 147,792.31/560.50
  6. Step 6: Final answer
    x = 263.68

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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.