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Finding the Fourth Proportional to 569.86, 786.51 and 370.78

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Solution

The fourth proportional to 569.86, 786.51 and 370.78 is: 511.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.86 : 786.51 = 370.78 : x
  2. Step 2: Convert to fraction form
    569.86/786.51 = 370.78/x
  3. Step 3: Cross multiply
    569.86x = 786.51 × 370.78
  4. Step 4: Simplify right side
    569.86x = 291,622.18
  5. Step 5: Solve for x
    x = 291,622.18/569.86
  6. Step 6: Final answer
    x = 511.74

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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.