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Finding the Fourth Proportional to 560.84, 836.66 and 521.56

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Solution

The fourth proportional to 560.84, 836.66 and 521.56 is: 778.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.84 : 836.66 = 521.56 : x
  2. Step 2: Convert to fraction form
    560.84/836.66 = 521.56/x
  3. Step 3: Cross multiply
    560.84x = 836.66 × 521.56
  4. Step 4: Simplify right side
    560.84x = 436,368.39
  5. Step 5: Solve for x
    x = 436,368.39/560.84
  6. Step 6: Final answer
    x = 778.06

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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.