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Finding the Fourth Proportional to 972.83, 1,458.50 and 486.22

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Solution

The fourth proportional to 972.83, 1,458.50 and 486.22 is: 728.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    972.83 : 1,458.50 = 486.22 : x
  2. Step 2: Convert to fraction form
    972.83/1,458.50 = 486.22/x
  3. Step 3: Cross multiply
    972.83x = 1,458.50 × 486.22
  4. Step 4: Simplify right side
    972.83x = 709,145.79
  5. Step 5: Solve for x
    x = 709,145.79/972.83
  6. Step 6: Final answer
    x = 728.96

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.