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Finding the Fourth Proportional to 560.93, 840.60 and 407.21

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Solution

The fourth proportional to 560.93, 840.60 and 407.21 is: 610.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.93 : 840.60 = 407.21 : x
  2. Step 2: Convert to fraction form
    560.93/840.60 = 407.21/x
  3. Step 3: Cross multiply
    560.93x = 840.60 × 407.21
  4. Step 4: Simplify right side
    560.93x = 342,296.52
  5. Step 5: Solve for x
    x = 342,296.52/560.93
  6. Step 6: Final answer
    x = 610.24

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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.