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Finding the Fourth Proportional to 805.25, 1,111.06 and 473.69

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Solution

The fourth proportional to 805.25, 1,111.06 and 473.69 is: 653.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    805.25 : 1,111.06 = 473.69 : x
  2. Step 2: Convert to fraction form
    805.25/1,111.06 = 473.69/x
  3. Step 3: Cross multiply
    805.25x = 1,111.06 × 473.69
  4. Step 4: Simplify right side
    805.25x = 526,298.01
  5. Step 5: Solve for x
    x = 526,298.01/805.25
  6. Step 6: Final answer
    x = 653.58

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Double scale
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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.