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Finding the Fourth Proportional to 560.55, 836.70 and 520.50

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Solution

The fourth proportional to 560.55, 836.70 and 520.50 is: 776.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.55 : 836.70 = 520.50 : x
  2. Step 2: Convert to fraction form
    560.55/836.70 = 520.50/x
  3. Step 3: Cross multiply
    560.55x = 836.70 × 520.50
  4. Step 4: Simplify right side
    560.55x = 435,502.35
  5. Step 5: Solve for x
    x = 435,502.35/560.55
  6. Step 6: Final answer
    x = 776.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.