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Finding the Fourth Proportional to 830.96, 1,146.69 and 457.93

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Solution

The fourth proportional to 830.96, 1,146.69 and 457.93 is: 631.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    830.96 : 1,146.69 = 457.93 : x
  2. Step 2: Convert to fraction form
    830.96/1,146.69 = 457.93/x
  3. Step 3: Cross multiply
    830.96x = 1,146.69 × 457.93
  4. Step 4: Simplify right side
    830.96x = 525,103.75
  5. Step 5: Solve for x
    x = 525,103.75/830.96
  6. Step 6: Final answer
    x = 631.92

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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.