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Finding the Fourth Proportional to 1,019.88, 1,530.43 and 370.66

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Solution

The fourth proportional to 1,019.88, 1,530.43 and 370.66 is: 556.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019.88 : 1,530.43 = 370.66 : x
  2. Step 2: Convert to fraction form
    1,019.88/1,530.43 = 370.66/x
  3. Step 3: Cross multiply
    1,019.88x = 1,530.43 × 370.66
  4. Step 4: Simplify right side
    1,019.88x = 567,269.18
  5. Step 5: Solve for x
    x = 567,269.18/1,019.88
  6. Step 6: Final answer
    x = 556.21

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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.