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Finding the Fourth Proportional to 653.25, 898.45 and 570.43

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Solution

The fourth proportional to 653.25, 898.45 and 570.43 is: 784.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.25 : 898.45 = 570.43 : x
  2. Step 2: Convert to fraction form
    653.25/898.45 = 570.43/x
  3. Step 3: Cross multiply
    653.25x = 898.45 × 570.43
  4. Step 4: Simplify right side
    653.25x = 512,502.83
  5. Step 5: Solve for x
    x = 512,502.83/653.25
  6. Step 6: Final answer
    x = 784.54

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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.