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Finding the Fourth Proportional to 1,259.02, 1,888.66 and 528.94

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Solution

The fourth proportional to 1,259.02, 1,888.66 and 528.94 is: 793.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259.02 : 1,888.66 = 528.94 : x
  2. Step 2: Convert to fraction form
    1,259.02/1,888.66 = 528.94/x
  3. Step 3: Cross multiply
    1,259.02x = 1,888.66 × 528.94
  4. Step 4: Simplify right side
    1,259.02x = 998,978.38
  5. Step 5: Solve for x
    x = 998,978.38/1,259.02
  6. Step 6: Final answer
    x = 793.46

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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.