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Finding the Fourth Proportional to 805.06, 1,111.32 and 510.49

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Solution

The fourth proportional to 805.06, 1,111.32 and 510.49 is: 704.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    805.06 : 1,111.32 = 510.49 : x
  2. Step 2: Convert to fraction form
    805.06/1,111.32 = 510.49/x
  3. Step 3: Cross multiply
    805.06x = 1,111.32 × 510.49
  4. Step 4: Simplify right side
    805.06x = 567,317.75
  5. Step 5: Solve for x
    x = 567,317.75/805.06
  6. Step 6: Final answer
    x = 704.69

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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.