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Finding the Fourth Proportional to 900.93, 1,242.16 and 585.74

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Solution

The fourth proportional to 900.93, 1,242.16 and 585.74 is: 807.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    900.93 : 1,242.16 = 585.74 : x
  2. Step 2: Convert to fraction form
    900.93/1,242.16 = 585.74/x
  3. Step 3: Cross multiply
    900.93x = 1,242.16 × 585.74
  4. Step 4: Simplify right side
    900.93x = 727,584.44
  5. Step 5: Solve for x
    x = 727,584.44/900.93
  6. Step 6: Final answer
    x = 807.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.