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Finding the Fourth Proportional to 568.28, 783.62 and 457.64

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Solution

The fourth proportional to 568.28, 783.62 and 457.64 is: 631.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.28 : 783.62 = 457.64 : x
  2. Step 2: Convert to fraction form
    568.28/783.62 = 457.64/x
  3. Step 3: Cross multiply
    568.28x = 783.62 × 457.64
  4. Step 4: Simplify right side
    568.28x = 358,615.86
  5. Step 5: Solve for x
    x = 358,615.86/568.28
  6. Step 6: Final answer
    x = 631.05

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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.