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Finding the Fourth Proportional to 738.48, 1,019.35 and 503.58

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Solution

The fourth proportional to 738.48, 1,019.35 and 503.58 is: 695.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    738.48 : 1,019.35 = 503.58 : x
  2. Step 2: Convert to fraction form
    738.48/1,019.35 = 503.58/x
  3. Step 3: Cross multiply
    738.48x = 1,019.35 × 503.58
  4. Step 4: Simplify right side
    738.48x = 513,328.73
  5. Step 5: Solve for x
    x = 513,328.73/738.48
  6. Step 6: Final answer
    x = 695.11

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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.