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Finding the Fourth Proportional to 581.79, 873.15 and 216.87

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Solution

The fourth proportional to 581.79, 873.15 and 216.87 is: 325.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.79 : 873.15 = 216.87 : x
  2. Step 2: Convert to fraction form
    581.79/873.15 = 216.87/x
  3. Step 3: Cross multiply
    581.79x = 873.15 × 216.87
  4. Step 4: Simplify right side
    581.79x = 189,360.04
  5. Step 5: Solve for x
    x = 189,360.04/581.79
  6. Step 6: Final answer
    x = 325.48

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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.