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Finding the Fourth Proportional to 846.29, 1,268.63 and 434.51

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Solution

The fourth proportional to 846.29, 1,268.63 and 434.51 is: 651.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    846.29 : 1,268.63 = 434.51 : x
  2. Step 2: Convert to fraction form
    846.29/1,268.63 = 434.51/x
  3. Step 3: Cross multiply
    846.29x = 1,268.63 × 434.51
  4. Step 4: Simplify right side
    846.29x = 551,223.91
  5. Step 5: Solve for x
    x = 551,223.91/846.29
  6. Step 6: Final answer
    x = 651.35

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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.