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Finding the Fourth Proportional to 355.80, 530.87 and 303.87

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Solution

The fourth proportional to 355.80, 530.87 and 303.87 is: 453.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.80 : 530.87 = 303.87 : x
  2. Step 2: Convert to fraction form
    355.80/530.87 = 303.87/x
  3. Step 3: Cross multiply
    355.80x = 530.87 × 303.87
  4. Step 4: Simplify right side
    355.80x = 161,313.95
  5. Step 5: Solve for x
    x = 161,313.95/355.80
  6. Step 6: Final answer
    x = 453.38

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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.