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Finding the Fourth Proportional to 580.46, 870.42 and 214.98

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Solution

The fourth proportional to 580.46, 870.42 and 214.98 is: 322.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.46 : 870.42 = 214.98 : x
  2. Step 2: Convert to fraction form
    580.46/870.42 = 214.98/x
  3. Step 3: Cross multiply
    580.46x = 870.42 × 214.98
  4. Step 4: Simplify right side
    580.46x = 187,122.89
  5. Step 5: Solve for x
    x = 187,122.89/580.46
  6. Step 6: Final answer
    x = 322.37

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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.