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Finding the Fourth Proportional to 773.23, 1,066.83 and 458.35

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Solution

The fourth proportional to 773.23, 1,066.83 and 458.35 is: 632.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.23 : 1,066.83 = 458.35 : x
  2. Step 2: Convert to fraction form
    773.23/1,066.83 = 458.35/x
  3. Step 3: Cross multiply
    773.23x = 1,066.83 × 458.35
  4. Step 4: Simplify right side
    773.23x = 488,981.53
  5. Step 5: Solve for x
    x = 488,981.53/773.23
  6. Step 6: Final answer
    x = 632.39

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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.