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Finding the Fourth Proportional to 707.78, 975.84 and 474.50

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Solution

The fourth proportional to 707.78, 975.84 and 474.50 is: 654.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.78 : 975.84 = 474.50 : x
  2. Step 2: Convert to fraction form
    707.78/975.84 = 474.50/x
  3. Step 3: Cross multiply
    707.78x = 975.84 × 474.50
  4. Step 4: Simplify right side
    707.78x = 463,036.08
  5. Step 5: Solve for x
    x = 463,036.08/707.78
  6. Step 6: Final answer
    x = 654.21

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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.