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Finding the Fourth Proportional to 573.07, 785.09 and 551.20

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Solution

The fourth proportional to 573.07, 785.09 and 551.20 is: 755.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.07 : 785.09 = 551.20 : x
  2. Step 2: Convert to fraction form
    573.07/785.09 = 551.20/x
  3. Step 3: Cross multiply
    573.07x = 785.09 × 551.20
  4. Step 4: Simplify right side
    573.07x = 432,741.61
  5. Step 5: Solve for x
    x = 432,741.61/573.07
  6. Step 6: Final answer
    x = 755.13

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.