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Finding the Fourth Proportional to 743.99, 1,026.81 and 429.19

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Solution

The fourth proportional to 743.99, 1,026.81 and 429.19 is: 592.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    743.99 : 1,026.81 = 429.19 : x
  2. Step 2: Convert to fraction form
    743.99/1,026.81 = 429.19/x
  3. Step 3: Cross multiply
    743.99x = 1,026.81 × 429.19
  4. Step 4: Simplify right side
    743.99x = 440,696.58
  5. Step 5: Solve for x
    x = 440,696.58/743.99
  6. Step 6: Final answer
    x = 592.35

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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.