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Finding the Fourth Proportional to 707.48, 975.54 and 445.16

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Solution

The fourth proportional to 707.48, 975.54 and 445.16 is: 613.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.48 : 975.54 = 445.16 : x
  2. Step 2: Convert to fraction form
    707.48/975.54 = 445.16/x
  3. Step 3: Cross multiply
    707.48x = 975.54 × 445.16
  4. Step 4: Simplify right side
    707.48x = 434,271.39
  5. Step 5: Solve for x
    x = 434,271.39/707.48
  6. Step 6: Final answer
    x = 613.83

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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.