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Finding the Fourth Proportional to 738.98, 1,103.98 and 529.08

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Solution

The fourth proportional to 738.98, 1,103.98 and 529.08 is: 790.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    738.98 : 1,103.98 = 529.08 : x
  2. Step 2: Convert to fraction form
    738.98/1,103.98 = 529.08/x
  3. Step 3: Cross multiply
    738.98x = 1,103.98 × 529.08
  4. Step 4: Simplify right side
    738.98x = 584,093.74
  5. Step 5: Solve for x
    x = 584,093.74/738.98
  6. Step 6: Final answer
    x = 790.41

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.