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Finding the Fourth Proportional to 560.16, 840.24 and 213.30

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Solution

The fourth proportional to 560.16, 840.24 and 213.30 is: 319.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.16 : 840.24 = 213.30 : x
  2. Step 2: Convert to fraction form
    560.16/840.24 = 213.30/x
  3. Step 3: Cross multiply
    560.16x = 840.24 × 213.30
  4. Step 4: Simplify right side
    560.16x = 179,223.19
  5. Step 5: Solve for x
    x = 179,223.19/560.16
  6. Step 6: Final answer
    x = 319.95

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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.