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Finding the Fourth Proportional to 492.59, 735.70 and 389.99

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Solution

The fourth proportional to 492.59, 735.70 and 389.99 is: 582.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.59 : 735.70 = 389.99 : x
  2. Step 2: Convert to fraction form
    492.59/735.70 = 389.99/x
  3. Step 3: Cross multiply
    492.59x = 735.70 × 389.99
  4. Step 4: Simplify right side
    492.59x = 286,915.64
  5. Step 5: Solve for x
    x = 286,915.64/492.59
  6. Step 6: Final answer
    x = 582.46

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.