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Finding the Fourth Proportional to 1,392.35, 2,088.48 and 570.62

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Solution

The fourth proportional to 1,392.35, 2,088.48 and 570.62 is: 855.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392.35 : 2,088.48 = 570.62 : x
  2. Step 2: Convert to fraction form
    1,392.35/2,088.48 = 570.62/x
  3. Step 3: Cross multiply
    1,392.35x = 2,088.48 × 570.62
  4. Step 4: Simplify right side
    1,392.35x = 1,191,728.46
  5. Step 5: Solve for x
    x = 1,191,728.46/1,392.35
  6. Step 6: Final answer
    x = 855.91

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