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Finding the Fourth Proportional to 570.48, 785.58 and 508.68

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Solution

The fourth proportional to 570.48, 785.58 and 508.68 is: 700.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.48 : 785.58 = 508.68 : x
  2. Step 2: Convert to fraction form
    570.48/785.58 = 508.68/x
  3. Step 3: Cross multiply
    570.48x = 785.58 × 508.68
  4. Step 4: Simplify right side
    570.48x = 399,608.83
  5. Step 5: Solve for x
    x = 399,608.83/570.48
  6. Step 6: Final answer
    x = 700.48

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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.