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Finding the Fourth Proportional to 705.83, 973.66 and 425.90

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Solution

The fourth proportional to 705.83, 973.66 and 425.90 is: 587.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    705.83 : 973.66 = 425.90 : x
  2. Step 2: Convert to fraction form
    705.83/973.66 = 425.90/x
  3. Step 3: Cross multiply
    705.83x = 973.66 × 425.90
  4. Step 4: Simplify right side
    705.83x = 414,681.79
  5. Step 5: Solve for x
    x = 414,681.79/705.83
  6. Step 6: Final answer
    x = 587.51

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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.