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Finding the Fourth Proportional to 570.08, 784.36 and 445.52

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Solution

The fourth proportional to 570.08, 784.36 and 445.52 is: 612.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.08 : 784.36 = 445.52 : x
  2. Step 2: Convert to fraction form
    570.08/784.36 = 445.52/x
  3. Step 3: Cross multiply
    570.08x = 784.36 × 445.52
  4. Step 4: Simplify right side
    570.08x = 349,448.91
  5. Step 5: Solve for x
    x = 349,448.91/570.08
  6. Step 6: Final answer
    x = 612.98

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.