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Finding the Fourth Proportional to 560.93, 840.98 and 214.20

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Solution

The fourth proportional to 560.93, 840.98 and 214.20 is: 321.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.93 : 840.98 = 214.20 : x
  2. Step 2: Convert to fraction form
    560.93/840.98 = 214.20/x
  3. Step 3: Cross multiply
    560.93x = 840.98 × 214.20
  4. Step 4: Simplify right side
    560.93x = 180,136.85
  5. Step 5: Solve for x
    x = 180,136.85/560.93
  6. Step 6: Final answer
    x = 321.14

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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.