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Finding the Fourth Proportional to 840.24, 1,259.55 and 565.72

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Solution

The fourth proportional to 840.24, 1,259.55 and 565.72 is: 848.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    840.24 : 1,259.55 = 565.72 : x
  2. Step 2: Convert to fraction form
    840.24/1,259.55 = 565.72/x
  3. Step 3: Cross multiply
    840.24x = 1,259.55 × 565.72
  4. Step 4: Simplify right side
    840.24x = 712,549.48
  5. Step 5: Solve for x
    x = 712,549.48/840.24
  6. Step 6: Final answer
    x = 848.03

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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.