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Finding the Fourth Proportional to 522.59, 777.53 and 520.70

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Solution

The fourth proportional to 522.59, 777.53 and 520.70 is: 774.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.59 : 777.53 = 520.70 : x
  2. Step 2: Convert to fraction form
    522.59/777.53 = 520.70/x
  3. Step 3: Cross multiply
    522.59x = 777.53 × 520.70
  4. Step 4: Simplify right side
    522.59x = 404,857.29
  5. Step 5: Solve for x
    x = 404,857.29/522.59
  6. Step 6: Final answer
    x = 774.72

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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.