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Finding the Fourth Proportional to 405.62, 607.53 and 188.54

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Solution

The fourth proportional to 405.62, 607.53 and 188.54 is: 282.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    405.62 : 607.53 = 188.54 : x
  2. Step 2: Convert to fraction form
    405.62/607.53 = 188.54/x
  3. Step 3: Cross multiply
    405.62x = 607.53 × 188.54
  4. Step 4: Simplify right side
    405.62x = 114,543.71
  5. Step 5: Solve for x
    x = 114,543.71/405.62
  6. Step 6: Final answer
    x = 282.39

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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.