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Finding the Fourth Proportional to 952.79, 1,314.78 and 554.19

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Solution

The fourth proportional to 952.79, 1,314.78 and 554.19 is: 764.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    952.79 : 1,314.78 = 554.19 : x
  2. Step 2: Convert to fraction form
    952.79/1,314.78 = 554.19/x
  3. Step 3: Cross multiply
    952.79x = 1,314.78 × 554.19
  4. Step 4: Simplify right side
    952.79x = 728,637.93
  5. Step 5: Solve for x
    x = 728,637.93/952.79
  6. Step 6: Final answer
    x = 764.75

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Half scale
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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.