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Finding the Fourth Proportional to 569.80, 786.45 and 373.42

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Solution

The fourth proportional to 569.80, 786.45 and 373.42 is: 515.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.80 : 786.45 = 373.42 : x
  2. Step 2: Convert to fraction form
    569.80/786.45 = 373.42/x
  3. Step 3: Cross multiply
    569.80x = 786.45 × 373.42
  4. Step 4: Simplify right side
    569.80x = 293,676.16
  5. Step 5: Solve for x
    x = 293,676.16/569.80
  6. Step 6: Final answer
    x = 515.40

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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.