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Finding the Fourth Proportional to 943.99, 1,302.86 and 551.01

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Solution

The fourth proportional to 943.99, 1,302.86 and 551.01 is: 760.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    943.99 : 1,302.86 = 551.01 : x
  2. Step 2: Convert to fraction form
    943.99/1,302.86 = 551.01/x
  3. Step 3: Cross multiply
    943.99x = 1,302.86 × 551.01
  4. Step 4: Simplify right side
    943.99x = 717,888.89
  5. Step 5: Solve for x
    x = 717,888.89/943.99
  6. Step 6: Final answer
    x = 760.48

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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.