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Finding the Fourth Proportional to 1,570.91, 2,356.43 and 531.02

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Solution

The fourth proportional to 1,570.91, 2,356.43 and 531.02 is: 796.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,570.91 : 2,356.43 = 531.02 : x
  2. Step 2: Convert to fraction form
    1,570.91/2,356.43 = 531.02/x
  3. Step 3: Cross multiply
    1,570.91x = 2,356.43 × 531.02
  4. Step 4: Simplify right side
    1,570.91x = 1,251,312.79
  5. Step 5: Solve for x
    x = 1,251,312.79/1,570.91
  6. Step 6: Final answer
    x = 796.55

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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.