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Finding the Fourth Proportional to 705.34, 1,058.46 and 474.31

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Solution

The fourth proportional to 705.34, 1,058.46 and 474.31 is: 711.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    705.34 : 1,058.46 = 474.31 : x
  2. Step 2: Convert to fraction form
    705.34/1,058.46 = 474.31/x
  3. Step 3: Cross multiply
    705.34x = 1,058.46 × 474.31
  4. Step 4: Simplify right side
    705.34x = 502,038.16
  5. Step 5: Solve for x
    x = 502,038.16/705.34
  6. Step 6: Final answer
    x = 711.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.