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Finding the Fourth Proportional to 808.01, 1,115.01 and 476.47

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Solution

The fourth proportional to 808.01, 1,115.01 and 476.47 is: 657.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    808.01 : 1,115.01 = 476.47 : x
  2. Step 2: Convert to fraction form
    808.01/1,115.01 = 476.47/x
  3. Step 3: Cross multiply
    808.01x = 1,115.01 × 476.47
  4. Step 4: Simplify right side
    808.01x = 531,268.81
  5. Step 5: Solve for x
    x = 531,268.81/808.01
  6. Step 6: Final answer
    x = 657.50

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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.