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Finding the Fourth Proportional to 1,019.96, 1,529.94 and 403.95

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Solution

The fourth proportional to 1,019.96, 1,529.94 and 403.95 is: 605.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019.96 : 1,529.94 = 403.95 : x
  2. Step 2: Convert to fraction form
    1,019.96/1,529.94 = 403.95/x
  3. Step 3: Cross multiply
    1,019.96x = 1,529.94 × 403.95
  4. Step 4: Simplify right side
    1,019.96x = 618,019.26
  5. Step 5: Solve for x
    x = 618,019.26/1,019.96
  6. Step 6: Final answer
    x = 605.93

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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.