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Finding the Fourth Proportional to 570.56, 785.04 and 500.36

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Solution

The fourth proportional to 570.56, 785.04 and 500.36 is: 688.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.56 : 785.04 = 500.36 : x
  2. Step 2: Convert to fraction form
    570.56/785.04 = 500.36/x
  3. Step 3: Cross multiply
    570.56x = 785.04 × 500.36
  4. Step 4: Simplify right side
    570.56x = 392,802.61
  5. Step 5: Solve for x
    x = 392,802.61/570.56
  6. Step 6: Final answer
    x = 688.45

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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.