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Finding the Fourth Proportional to 711.03, 975.93 and 630.57

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Solution

The fourth proportional to 711.03, 975.93 and 630.57 is: 865.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    711.03 : 975.93 = 630.57 : x
  2. Step 2: Convert to fraction form
    711.03/975.93 = 630.57/x
  3. Step 3: Cross multiply
    711.03x = 975.93 × 630.57
  4. Step 4: Simplify right side
    711.03x = 615,392.18
  5. Step 5: Solve for x
    x = 615,392.18/711.03
  6. Step 6: Final answer
    x = 865.49

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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.