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Finding the Fourth Proportional to 583.93, 873.70 and 421.26

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Solution

The fourth proportional to 583.93, 873.70 and 421.26 is: 630.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.93 : 873.70 = 421.26 : x
  2. Step 2: Convert to fraction form
    583.93/873.70 = 421.26/x
  3. Step 3: Cross multiply
    583.93x = 873.70 × 421.26
  4. Step 4: Simplify right side
    583.93x = 368,054.86
  5. Step 5: Solve for x
    x = 368,054.86/583.93
  6. Step 6: Final answer
    x = 630.31

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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.