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Finding the Fourth Proportional to 949.05, 1,309.53 and 529.35

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Solution

The fourth proportional to 949.05, 1,309.53 and 529.35 is: 730.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    949.05 : 1,309.53 = 529.35 : x
  2. Step 2: Convert to fraction form
    949.05/1,309.53 = 529.35/x
  3. Step 3: Cross multiply
    949.05x = 1,309.53 × 529.35
  4. Step 4: Simplify right side
    949.05x = 693,199.71
  5. Step 5: Solve for x
    x = 693,199.71/949.05
  6. Step 6: Final answer
    x = 730.41

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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.