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Finding the Fourth Proportional to 805.56, 1,112.01 and 510.99

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Solution

The fourth proportional to 805.56, 1,112.01 and 510.99 is: 705.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    805.56 : 1,112.01 = 510.99 : x
  2. Step 2: Convert to fraction form
    805.56/1,112.01 = 510.99/x
  3. Step 3: Cross multiply
    805.56x = 1,112.01 × 510.99
  4. Step 4: Simplify right side
    805.56x = 568,225.99
  5. Step 5: Solve for x
    x = 568,225.99/805.56
  6. Step 6: Final answer
    x = 705.38

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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.