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Finding the Fourth Proportional to 583.16, 874.78 and 339.60

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Solution

The fourth proportional to 583.16, 874.78 and 339.60 is: 509.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.16 : 874.78 = 339.60 : x
  2. Step 2: Convert to fraction form
    583.16/874.78 = 339.60/x
  3. Step 3: Cross multiply
    583.16x = 874.78 × 339.60
  4. Step 4: Simplify right side
    583.16x = 297,075.29
  5. Step 5: Solve for x
    x = 297,075.29/583.16
  6. Step 6: Final answer
    x = 509.42

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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.