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Finding the Fourth Proportional to 560.22, 840.28 and 286.10

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Solution

The fourth proportional to 560.22, 840.28 and 286.10 is: 429.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.22 : 840.28 = 286.10 : x
  2. Step 2: Convert to fraction form
    560.22/840.28 = 286.10/x
  3. Step 3: Cross multiply
    560.22x = 840.28 × 286.10
  4. Step 4: Simplify right side
    560.22x = 240,404.11
  5. Step 5: Solve for x
    x = 240,404.11/560.22
  6. Step 6: Final answer
    x = 429.12

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1.5x scale

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.