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Finding the Fourth Proportional to 581.95, 873.45 and 520.16

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Solution

The fourth proportional to 581.95, 873.45 and 520.16 is: 780.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.95 : 873.45 = 520.16 : x
  2. Step 2: Convert to fraction form
    581.95/873.45 = 520.16/x
  3. Step 3: Cross multiply
    581.95x = 873.45 × 520.16
  4. Step 4: Simplify right side
    581.95x = 454,329.38
  5. Step 5: Solve for x
    x = 454,329.38/581.95
  6. Step 6: Final answer
    x = 780.70

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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.