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Finding the Fourth Proportional to 707.06, 975.70 and 427.13

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Solution

The fourth proportional to 707.06, 975.70 and 427.13 is: 589.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.06 : 975.70 = 427.13 : x
  2. Step 2: Convert to fraction form
    707.06/975.70 = 427.13/x
  3. Step 3: Cross multiply
    707.06x = 975.70 × 427.13
  4. Step 4: Simplify right side
    707.06x = 416,747.34
  5. Step 5: Solve for x
    x = 416,747.34/707.06
  6. Step 6: Final answer
    x = 589.41

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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.