Home / 1,455.19-2,181.80-530.63

Finding the Fourth Proportional to 1,455.19, 2,181.80 and 530.63

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Solution

The fourth proportional to 1,455.19, 2,181.80 and 530.63 is: 795.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.19 : 2,181.80 = 530.63 : x
  2. Step 2: Convert to fraction form
    1,455.19/2,181.80 = 530.63/x
  3. Step 3: Cross multiply
    1,455.19x = 2,181.80 × 530.63
  4. Step 4: Simplify right side
    1,455.19x = 1,157,718.95
  5. Step 5: Solve for x
    x = 1,157,718.95/1,455.19
  6. Step 6: Final answer
    x = 795.58

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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.