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Finding the Fourth Proportional to 570.19, 855.53 and 560.96

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Solution

The fourth proportional to 570.19, 855.53 and 560.96 is: 841.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.19 : 855.53 = 560.96 : x
  2. Step 2: Convert to fraction form
    570.19/855.53 = 560.96/x
  3. Step 3: Cross multiply
    570.19x = 855.53 × 560.96
  4. Step 4: Simplify right side
    570.19x = 479,916.34
  5. Step 5: Solve for x
    x = 479,916.34/570.19
  6. Step 6: Final answer
    x = 841.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.